I'm aware of an issue where people are receiving an error when trying to post (EX1364). Currently working to resolve it.
Edit: Tracked it down to posting a new topic only. Support ticket is open.
Edit 2: Should be good to go now. Let me know if anyone is still having issues.

Unfortunately so does everybody else.
Not sure if serious, but if you are that's a pretty good candidate for problems: https://caniuse.com/#compare=firefox+12,firefox+54&compare_cats=JS,JS API,Security

Honestly, I'm not super thrilled with the update either. It seems like a partially functional pile of shit. But I couldn't leave everything sitting on a 4 or 5 year out of date piece of software.
I cant replicate it right now though. Does it really prevent you submitting the post? Its just an unfurl... what the hell IPS.

Personally I just use the center of the front cross member or diff on most cars and lift an entire end, not individual corners. Make sure its chocked (especially if you're lifting the rear) and properly supported (jack stands) before you get under it. I love my trolley jack but I don't trust it with my life.

Yea, this is my bad. I've known about it for a while (I dunno, like a year maybe?) and just haven't had the time and/or motivation to do anything about it.
But it maybe, possibly, could be working again. Some hosts (gmail) are still having a teary about my IPv6 config, other hosts are just having a teary (hotmail), but something is getting through to some places.
I might keep an eye on it, maybe, probably not. If its still broken start a mass mailing campaign to [email protected] and I'll probably get annoyed enough to do something about it, such as filtering all the messages to trash.